Quickstart

Prepare the environment

Node.js (v20.19.4 or higher)
npm (v10.9.0 or higher)

First, we recommend using Node.js to setup the Node.js environment.

npm init -y

Install the dependencies:

npm install browsernode

Then install playwright:

npx playwright install

Create an agent

Then you can use the agent as follows:

import { Agent } from "browsernode";
import { ChatOpenAI } from "browsernode/llm";

const llm = new ChatOpenAI({
	model: "gpt-4.1",
	temperature: 0.0,
	apiKey: process.env.OPENAI_API_KEY,
});

const task = "Compare the price of gpt-4o and DeepSeek-V3";
const agent = new Agent(task, llm);
const history = await agent.run();
console.log(history.usage);

Set up your LLM API keys

Add your API keys for the provider you want to use to your .env file.

mv .env.example .env

ChatOpenAI and other Langchain chat models require API keys. You should store these in your .env file. For example, for OpenAI and Anthropic, you can set the API keys in your .env file, such as:

.env

OPENAI_API_KEY=
ANTHROPIC_API_KEY=

For other LLM models you can refer to the Supported Models page to find how to set them up with their specific API keys.

Run the example

npx tsx examples/simple.ts

Get Started

Customize

Prepare the environment

Create an agent

Set up your LLM API keys

Run the example

​Prepare the environment

​Create an agent

​Set up your LLM API keys

​Run the example

Prepare the environment

Create an agent

Set up your LLM API keys

Run the example